KR102335914B1 - A crusher including a gas-vaporized raw material cooling device - Google Patents

Abstract

Among the pulverized materials, materials such as soybeans, which contain a lot of fat, agglomerate with each other due to the heat generated during pulverization and the effects of milk fat and sugar contained in the raw materials. The bridge phenomenon that stays inside and agglomerates occurs, which is a factor that makes pulverization difficult. In order to overcome this in the current pulverization field, when pulverizing soybeans, liquid nitrogen or dry ice is mixed and pulverized to offset the pulverization heat, or the raw material is impregnated in liquid nitrogen in advance and then put into the pulverizer, using cooling heat of -196°C. The situation is that a method of pulverizing by offsetting the heat of pulverization is used. This grinding method has problems such as increasing the grinding cost by using a large amount of consumable liquid nitrogen or dry ice, and dew condensation occurs due to moisture in the air when the grinding material is discharged to the outside after grinding.
An object of the present invention is to solve the above-described problems, and to maintain a low temperature state from the point at which the raw material input into the hopper 201 passes through the cylinder 208 by the screw 207, and To provide a method to improve the flowability during grinding, to reduce the grinding cost by not using liquid nitrogen, and to implement a method to prevent condensation due to the low temperature of liquid nitrogen contained in the pulverized product discharged after pulverization, The task is to realize a pulverizer with a structure in which only the pulverized material of the desired particle size is discharged to the material collection unit by one pulverization, and the un pulverized material is continuously pulverized in the pulverizing unit, so that the entire pulverized material is pulverized to the desired particle size in one pulverization to do

Description

A crusher including a gas-vaporized raw material cooling device

The present invention relates to a pulverizer including a raw material cooling device 200, which is installed on the side of the pulverizing unit 300, and a hopper 201 for inputting raw materials is installed thereon, and a cylinder 208 crossing at right angles to the lower end of the hopper. ), an air intake hole 206 is formed at the distal end of the cylinder, a screw 207 is disposed inside the cylinder, and a cooling device housing 205 surrounding it, vaporization to supply vaporized gas to the lower end of the cooling device housing 205 The gas inlet 204, the vaporized gas outlet 203 for discharging the vaporized gas on the upper part of the cooling device housing 205, and the gas refrigerant cycle 600 connecting the vaporized gas inlet 204 and the vaporized gas outlet 203 ) relates to a grinder equipped with a gas vaporization type raw material cooling device, characterized in that it comprises a.

National R&D project supporting this invention

Assignment identification number: 116127-01-1-SB010

Department name: Ministry of Agriculture, Food and Rural Affairs

Research and management institution: Korea Energy Technology

Research project name: Development of ultra-fine low-temperature grinder

Contribution rate: 1/3

Organized by : Korea Energy Technology

Research period: 2016.12.05 ~ 2017.12.04

Among the pulverized materials, materials such as soybeans, which contain a lot of fat, agglomerate with each other due to the heat generated during pulverization and the effects of milk fat and sugar contained in the raw materials. The bridge phenomenon that stays inside and agglomerates occurs, which is a factor that makes pulverization difficult. In order to overcome this in the current pulverization field, when pulverizing soybeans, liquid nitrogen or dry ice is mixed and pulverized to offset the pulverization heat, or the raw material is impregnated in liquid nitrogen in advance and then put into the pulverizer, using cooling heat of -196°C. The situation is that a method of pulverizing by offsetting the heat of pulverization is used. This grinding method has problems such as increasing the grinding cost by using a large amount of consumable liquid nitrogen or dry ice, and dew condensation occurs due to moisture in the air when the grinding material is discharged to the outside after grinding.

An object of the present invention is to solve the above-described problems, and to maintain a low temperature state from the point at which the raw material input into the hopper 201 passes through the cylinder 208 by the screw 207, and To provide a method to improve the flowability during grinding, to reduce the grinding cost by not using liquid nitrogen, and to implement a method to prevent condensation due to the low temperature of liquid nitrogen contained in the pulverized product discharged after pulverization, The task is to realize a pulverizer with a structure in which only the pulverized material of the desired particle size is discharged to the material collection unit by one pulverization, and the un pulverized material is continuously pulverized in the pulverizing unit, so that the entire pulverized material is pulverized to the desired particle size in one pulverization do it with

One aspect of the present invention for achieving the above technical problem relates to a raw material cooling device 200, which is installed on the side of the grinding part 300, the grinding part raw material inlet 301, and a hopper 201 for putting raw materials thereon; A cylinder 208 crossing at right angles to the lower end of the hopper 201, an air intake hole 206 is formed at the distal end of the cylinder 208, and a screw driving motor 202, a screw 207, and a cylinder 208 are installed inside. The cooling device housing 205 disposed in and surrounding it, the vaporized gas inlet 204 for supplying vaporized gas to the lower end of the cooling device housing, and the vaporized gas outlet for discharging the vaporized gas on the upper part of the cooling device housing 205 ( 203), a refrigerant compressor/condenser unit 600 connecting the vaporized gas inlet and the vaporized gas outlet, characterized in that it includes a raw material cooling device 200, characterized in that it comprises. :

In addition, the grinding shaft insertion hole into which the grinding shaft 307 is inserted in the center, the raw material collision groove 309 formed in a plurality of radially on the inner circumferential surface, the input space between the grinding shaft insertion hole and the raw material collision groove 309 and the grinding auxiliary material A track housing 302 comprising a raw material input hole 310 connecting the inlet 301, a coarse bonsai recirculation suction hole 312 connected to the input space, and a recirculation unit 305 of a detachable structure. ) is characterized in that it contains.

In addition, the grinding shaft 307 inserted into the grinding shaft insertion hole rotated using the motor 101 and the belt 103, the rotor disk 313 connected to the grinding shaft 307 to rotate, and the rotor disk 313 A classifying unit blade 312 formed on the classifying unit side as a boundary, a grinding unit blade 311 formed on the input space side with the rotor disk 313 as a boundary, and a rotor bushing 314 formed with a crushing shaft fastening hole 315 at the center It is characterized in that it includes a rotor 306 of an integral structure.

In addition, a classification housing configured to include a cylindrical space for separating coarse powder and fine powder by the centrifugal force formed by the coarse powder ash circulation discharge hole 311 formed at the top, the rotation of the rotor 306 and the classification blade 312 (303) characterized by including.

In addition, the pulverized fine powder inlet 402 connected to the pulverization outlet 308 of the pulverizing unit 300, the dust collecting unit 402, the air outlet 401 configured on the upper part of the dust collecting unit, and a pulverization container in which the pulverized powder filtered from the dust collecting unit is collected. It is characterized in that it comprises a material collection unit 400 is configured.

The grinder including the gas vaporization type raw material cooling device according to the present invention cools the cylinder using temperature-controllable gas vaporization heat, and then the grinding raw material is pulverized because the grinding raw material is constantly moved into the grinder by the screw inside the cylinder. When it reaches the area, the oil is coagulated or solidified, so that it can be pulverized even in the case of a raw material with a lot of oil and a lot of sugar. In addition, only the pulverized material of the desired particle size is discharged to the material collection unit through one pulverization, and the material that does not reach the desired grain size is repeatedly pulverized in the pulverizing unit. has the effect of simultaneously realizing

1 : A perspective view of a grinder including a gas vaporization type raw material cooling device
Figure 2: An exploded perspective view of a grinder including a gas vaporization type raw material cooling device
3 : A perspective view constituting a gas vaporization type raw material cooling device
Figure 4: A perspective view of the material collecting part
5 : a cut-away perspective view of the crushing part
Figure 6 : A cross-sectional perspective view for marking the collision groove of the track housing
Fig. 7: A perspective view of the rotor
Fig. 8: a sectional perspective view of the rotor

One aspect of the present invention for achieving the above technical problem relates to a raw material cooling device 200, and a hopper 201 for putting raw materials in the upper part, a cylinder 208 crossing at right angles to the lower end of the hopper 201, At the distal end of the cylinder (208), an air intake hole (206) is formed, and the screw drive motor (202), the screw (207), and the cylinder (208) are disposed inside the cooling device housing (205) and the cooling device housing (208) surrounding it. The vaporized gas inlet 204 for supplying vaporized gas to the lower part, the vaporized gas outlet 203 for discharging the vaporized gas on the upper part of the cooling device housing 205, the refrigerant compression/refrigerant connecting the vaporized gas inlet and the vaporized gas outlet It is configured to include a condenser unit (600).

Refrigerant compressor/condenser unit 600 is a refrigerant compressor, a condenser, and a cooling fan configured to cool the condenser fins are integrated in one case. As a giving device, the temperature of the raw material cooling device 200 can be adjusted by turning on and off the operation of the refrigerant compressor according to the temperature of the cooling device housing 205 . In the present invention, the refrigerant compressor/condenser unit 600 is a known and universally valid technology and is a device widely used in the industry, so its structure and action will be omitted in the present invention. However, when the temperature of the raw material cooling device is higher than the appropriate temperature in the control device of the grinder, the refrigerant compressor of the refrigerant compressor/condenser unit 600 is operated to circulate the refrigerant to lower the temperature of the raw material cooling device, and the temperature of the raw material cooling device is appropriate When the temperature is lower than the temperature, the refrigerant compressor of the refrigerant compressor/condenser unit 600 is stopped to stop the circulation of the refrigerant, and the temperature of the raw material cooling device 200 is raised to adjust the cooling temperature. The vaporization gas inlet 204 for supplying vaporized gas to the lower end of the cooling device housing adjusts the size of the gas cylinder and hole by itself to play the role of a capillary tube, or separately passes the expansion valve to vaporize the vaporizing gas inlet 204 ) can be configured to supply With this structure, the pulverized material put into the hopper proceeds in the direction indicated by the arrow in FIG. 1 and is pulverized.

At this time, the pulverized material is supplied by gravity from the hopper 201 of the raw material cooling device 200 to the connection part of the cylinder furnace 208, and the screw installed in the cylinder 208 and the screw 207 coupled to the screw driving motor 202 rotates. It is cooled while passing through the cylinder 208 at a constant speed and a constant amount.

The cooled pulverized material is mixed with the air that has passed through the air intake hole 206 at the end of the cylinder, passes through the raw material inlet 301 and the raw material input hole 310 of the pulverizing unit 300, and is injected into the pulverizing unit 300 supplied to space. At this time, although the air intake hole 206 is shown as a hole, an air filter or the like can be attached or added as needed.

The crushing material supplied to the crushing unit includes a crushing shaft insertion hole into which a crushing shaft 307 is inserted in the center, a raw material collision groove 309 formed in a plurality of radially on the inner circumferential surface, a crushing shaft insertion hole and a raw material collision groove 309 ), a raw material input hole 310 connecting the input space between the grinding part raw material inlet 301, a coarse bon ash circulation suction hole 312 connected to the input space, and a recirculation part 305 of a detachable structure. In the input space of the track housing 302, characterized in that the supplied pulverized material is accelerated by the rotation of the pulverizing blades of the rotating rotor, and then collides with the raw material collision groove 309 to be pulverized by shear and impact forces. do. At this time, the inner circumferential surface of the track housing 302 in which the raw material collision groove 309 is installed should be larger than the grinding shaft insertion hole.

At this time, the rotor is connected to the grinding shaft 307 and rotates on the rotating rotor disk 313, the classifying unit wings 312 formed on the classification side with the rotor disk 313 as a boundary, and on the input space side with the rotor disk 313 as the boundary. It is composed of a grinding unit blade 311 and rotates according to the rotation of the grinding shaft.

At this time, the rotor rotates within the inner circumferential surface of the track housing 302 in which the raw material collision groove 309 is installed, and the crushing material is crushed by centrifugal force and The rotational force is obtained and the velocity energy is obtained. At this time, the inner circumferential surface of the track housing 302 should be larger than the rotation area of the rotor.

The pulverized material having such velocity energy collides with the raw material collision groove 309 of the track housing 302, and is pulverized by a repulsive force.

In the rotor 306, the area of the crushing unit blade 311 is larger than the area of the classifying unit blade 312 with the rotor disk 313 as a boundary. This causes the pressure caused by the centrifugal force of the rotor blades 311 and 312 to be greater in the crushing section than in the classifying section, so that the airflow moves from the crushing section to the classifying section.

Under the influence of this, the pulverized material moves to the area of the classifying unit blade 312 of the rotor disk 313 . This structure is because the principle of both suction fans is applied based on the rotor disk 313, and the classifying unit blade is on the outer side of the rotation area, and the crushing unit blade 311 part communicates with the inside of the rotation area. ) and the resulting flow of airflow to the passage is generated.

At this time, in the columnar classification space installed in the classification housing 303, the crushed material is rotated by the rotational force of the classification blade 312, and the fine powder moves to the center and the coarse powder moves to the outer part by centrifugal force and drag force to rotate. . At this time, the coarse powder moves to the input space of the track housing 302 by moving the coarse bon ash circulation discharge hole 311, the recirculation unit 305, and the coarse bon ash circulation suction hole 312 formed on the upper portion of the classification housing 303 for the reasons described above. will do The coarse powder of the pulverized material moved to the input space again acquires speed energy and centrifugal force by the pulverizing unit blade 311, thereby repeating the pulverization process. At this time, the pulverized material is rotated by the rotational force of the classifier blade 312 in the cylindrical classifying space installed in the classifying housing 303, and the fines are collected in the center by centrifugal force and drag. (304) It is moved to the material collection unit 400 through the fine powder outlet 308.

At this time, the diameter of the fine powder discharge part 304 and the fine powder discharge port 308 should be smaller than the rotating outer diameter of the rotor. The smaller the diameter of the fine powder discharge port 308 is, the smaller the classification area is, so that the fine powder can be further pulverized. According to this principle, the size of the pulverized particles can be adjusted by the combination of the diameter of the fine powder outlet 308 and the rotation speed of the rotor 306 .

In addition, the pulverized fine powder inlet 402 connected to the pulverization outlet 308 of the pulverizing unit 300, the dust collecting unit 402, the air outlet 401 configured on the upper part of the dust collecting unit, and a pulverization container in which the pulverized powder filtered from the dust collecting unit is collected. The configured material collection unit 400 may be configured to increase the grinding efficiency by installing a centrifugal blower at the front end of the air outlet 401 or by adding a vacuum device to the rear end of the air outlet. In the dust collecting part, the pulverized material supplied to the pulverized powder inlet 402 is filtered by a filter and collected in a pulverized container, and the air passing through the filter is discharged to the air outlet 401 or moved to a vacuum device connected to the air outlet 401. will be discharged Of course, at this time, according to the convenience of the mechanical configuration, it may be configured by adding a vacuum device directly to the rear end of the filter. The application of such a vacuum device is not the main content of the present invention, but a well-known technique, and thus detailed description thereof will be omitted.

The grinder according to the present invention enables grinding of materials containing a large amount of oil or sugar without the use of a consumable refrigerant, and this grinder can be used in the whole tofu production process, confectionery process, and pharmaceutical process.

1 100 Power means 1 101 Motor
1 102 Motor shaft pulley 1 103 Belt
1 104 Grinding shaft pulley 1 105 Bearing housing
1 11 Raw material progress 1 12 Differentiation direction
1 13 Air discharge direction 1 200 Raw material cooling device
1 201 Hopper 1 202 Screw drive motor
1 203 Vaporized gas outlet 1 204 Vaporized gas inlet
1 205 Cooling device housing 1 206 Air intake hole
1 300 Grinding part 1 301 Grinding part raw material inlet
1 302 Track housing 1 303 Classification housing
1 304 Undischarged part 1 305 Recirculation part
1 400 Material collection unit 1 401 Air outlet
1 402 Dust collection unit 1 403 Powder container
2 101 Motor 2 102 Motor Shaft Pulley
2 103 Belt 2 104 Grinding Shaft Pulley
2 105 Bearing housing 2 12 Differential direction
2 13 Air discharge direction 2 200 Raw material cooling device
2 201 Hopper 2 202 Screw drive motor
2 203 Vaporized gas outlet 2 204 Vaporized gas inlet
2 205 Cooling device housing 2 206 Air intake hole
2 207 screw 2 208 cylinder
2 209 Cooling material outlet 2 210 Expansion valve
2 300 Grinding part 2 301 Grinding part raw material inlet
2 302 Track housing 2 303 Classification housing
2 304 Undischarged part 2 305 Recirculation part
2 306 Rotor 2 307 Grinding Shaft
2 317 Classification housing connection part 2 400 Material collection part
2 401 Air outlet 2 402 Dust collector
2 403 Grinder 3 100 Power means
3 203 Vaporized gas outlet 3 204 Vaporized gas inlet
3 210 Expansion valve 3 300 Grinding part
3 400 Material collection unit 3 600 Refrigerant compressor, condenser unit
3 601 refrigerant compressor housing 3 602 high pressure gas outlet
3 603 Low pressure gas inlet 3 604 High pressure liquefied gas path
3 605 Low-pressure gasification gas path 4 12 Differential flow direction
4 13 Air exhaust direction 4 401 Air exhaust port
4 402 Dust collection unit 4 403 Fine powder container
4 404 Grinding fine powder inlet 5 104 Grinding shaft pulley
5 105 Bearing housing 5 301 Grinding auxiliary raw material inlet
5 302 Track housing 5 303 Classification housing
5 304 Undischarged part 5 305 Recirculation part
5 306 Rotor 5 308 Undifferentiated outlet
5 310 Raw material input hole 5 311 Rough bon ash circulation discharge hole
5 312 Rough ash circulation suction hole 5 318 Raw material discharge hole
5 319 Classification section 6 302 Track housing
6 309 Raw material impact groove 7 306 Rotor
7 311 Grinding unit blade 7 312 Classifying unit blade
7 313 Rotor Disc 7 314 Rotor Bushing
7 315 Crushing shaft fastener 8 306 Rotor
8 311 Grinder blade 8 312 Classifier blade
8 313 Rotor Disc 8 314 Rotor Bushing

Claims (8)

As a pulverizer consisting of a power means 100, a raw material cooling device 200, a pulverizing unit 300, and a material collecting unit 400,
The power means 100 is composed of a motor 101, a motor shaft pulley 102, a grinding shaft pulley 104, and a belt 103,
The material collecting unit 400 is composed of a pulverized fine powder inlet 404, a dust collecting unit 402, and an air outlet 401 configured on the upper part of the dust collecting unit 402,
The raw material cooling device 200 includes a cooling device housing 205 made of a sealed pressure vessel, a vaporized gas inlet 204 installed under the cooling device housing 205, and an upper portion of the cooling device housing 205. The installed vaporized gas outlet 203 , the cylinder 208 installed inside the cooling device housing 205 , the screw 207 installed inside the cylinder 208 , and a screw driving motor for rotating the screw 207 . 202, the cooling raw material outlet 209 connected to the crushing raw material inlet 301, the hopper 201 connected to the cylinder 208, the vaporized gas inlet 204 and the vaporized gas outlet 203 Consists of a refrigerant compression condenser unit (600),
The pulverization unit 300 is provided with a raw material input hole 310 into which the pulverized material can be put, a coarse bonsai circulation suction hole 312, and a classifying housing connecting portion 317 having a larger diameter than the rotor 306 at one end. ) formed track housing 302,
A grinding shaft 307 disposed in the center of the track housing 302 and connected to the motor 101,
The track housing 302 is formed in a semi-circular shape or a shape combining a semi-circle and a circular arc on the inner wall of the track housing 302, and the raw material collision groove 309 is radially disposed;
A raw material discharge hole 318 smaller than the diameter of the rotor 306 on one side, a coarse bon ash circulation discharge hole 311 formed in a direction perpendicular to the raw material discharge hole 318, and an opposite side of the raw material discharge hole 318 are the raw material discharge A classifying housing 303 having a classifying portion 319 larger than the diameter of the ball 318 is formed;
The coarse bonsai circulation suction hole 312 of the track housing 302 and the coarse bonsai circulation discharge hole 311 of the classification housing 303 are connected, but the recirculation part 305 has a circular cross-section and is in the form of a detachable structure. ,
The area is composed of a grinding unit blade 311 and a classifying unit blade 313 with the rotor disk 313 as a boundary, and is connected to the grinding shaft 307 and rotates, but the blades are centered on the grinding shaft fastener 315 The rotor 306 disposed radially, the area of the crushing unit blade 311 being larger than the area of the classifying unit blade 312,
A grinder comprising a gas vaporization type raw material cooling device, characterized in that it comprises a.
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